2026-09-22T06:07:12Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/102492 2023-07-11 col_2142_5131 col_2142_8859 com_2142_5130 com_2142_8858 com_2142_234

Errede, Steve Martinez Outschoorn, Verena Peng, Jen-Chief Cooper, Lance Ferrante, Andrew 2019-02-06T19:36:38Z 2019-02-06T19:36:38Z 2018-12-07 2018-12 This thesis presents a search for a new exotic spin-0 particle a in 36.47 fb^(-1) of sqrt(s) = 13 TeV pp collisions recorded by the ATLAS detector at the LHC. This analysis is part of a broader search for a H ==> aa ==> bbbb, which uses a Higgs produced in association with a weak vector boson to improve triggering on events. The channel considered here uses Higgs-Z---associated production with two leptons in the final state. The analysis uses a likelihood-fit profile of a multivariate discriminant to place 95% confidence limit upper bounds on the cross section of the proposed signal. A study of the performance of the ATLAS Tile Calorimeter in extremely energetic events is also presented. Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2019-02-05 without embargo terms The student, Andrew Ferrante, accepted the attached license on 2018-12-06 at 14:41. The student, Andrew Ferrante, submitted this Dissertation for approval on 2018-12-06 at 15:12. This Dissertation was approved for publication on 2018-12-07 at 08:02. DSpace SAF Submission Ingestion Package generated from Vireo submission #13242 on 2019-02-05 at 11:15:36 Made available in DSpace on 2019-02-06T19:36:38Z (GMT). No. of bitstreams: 3 FERRANTE-DISSERTATION-2018.pdf: 4688504 bytes, checksum: 96181a4acf26a647e2d5ab277123c9fe (MD5) LICENSE.txt: 4212 bytes, checksum: cf5086366ec2c2d2f24f5753c1c6460b (MD5) PROQUEST_LICENSE.txt: 4558 bytes, checksum: 2451793c01c8b5e2a447494e46362587 (MD5) Previous issue date: 2018-12-07 application/pdf http://hdl.handle.net/2142/102492 en (C) 2018 by Andrew Ferrante. All rights reserved. LHC ATLAS BSM Beyond the Standard Model Higgs Physics Exotic Search Scalar Pseudoscalar Z Boson Di-lepton Direct search for exotic spin zero particles in the di-lepton final state of Higgs-Z associated production in sqrt(s) = 13 TeV pp collisions text text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.